Back to Supported Formats

Compression Formats

imgshrnk supports major image formats for compression using jSquash codecs and WebAssembly. Note: BMP and TIFF are supported as input but not for compression.

Supported Compression Formats

JPG

JPEG

Most popular format

  • Perfect for photographs
  • Excellent compression ratios
  • Universal browser support
  • Lossy compression

Best for: Photos, complex images with many colors

PNG

PNG

Lossless quality

  • Transparency support
  • Lossless compression
  • Perfect for graphics
  • High quality preservation

Best for: Logos, graphics, images with transparency

WebP

WebP

Modern & efficient

  • 25-35% smaller than JPEG
  • Supports transparency
  • Both lossy & lossless
  • Google technology

Best for: Web optimization, modern browsers

BMP

BMP

Bitmap format (Not Supported)

  • Uncompressed quality
  • Windows native format
  • Simple structure
  • Large file sizes

Best for: Converting to compressed formats

TIFF

TIFF

Professional format (Not Supported)

  • High quality archival
  • Lossless compression
  • Professional standard
  • Metadata support

Best for: Professional photography, print media

Compression Formats Comparison

FormatCompressionQualityTransparencyBrowser Support
JPEGExcellentGood (Lossy)100%
PNGGoodPerfect (Lossless)100%
WebPExcellentExcellent95%
AVIFSuperiorExcellent85%
BMPNonePerfect90%
TIFFGoodPerfect70%

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